We assist clients in developing and implementing the right strategy based on the framework outlined below
Define Need and Goals for a Crack Management Program

What is driving the need for such a program? What is the time frame to implement one?

What are the existing resources to accomplished this effect? Define how the success of the program will be measured?

Threat Identification & Susceptibility

Crack threat evaluation & identification

Perform susceptibility analysis & verification of threat

Identify actions that should be taken when a pipeline segment is deemed susceptible and when the pipeline is found not to be susceptible

Prioritize pipeline segments by susceptibility results

Characterization of Threat

Characterize the type of defects found (cracks, seam weld anomaly or dent related) and their location, the conditions present and what contributed to their formation and growth

Environmental conditions

Pipeline attributes

Operating conditions

Since there is no standard industry practice, develop an in-ditch Non-Destructive Evaluation (NDE) protocol to examine and document field evaluations

Create a database with the information gathered and analyzed characterizing the threat

Preventive Measures

Identify and implement initial set of preventive measures based on analysis and findings up to this point in the program

Integrity Assessments & Mitigation

Evaluate In-Line Inspection technologies

Evaluate a Pressure Testing program

Evaluate Direct Assessment option

Review and identify appropriate repair options for cracks and crack-like defects discovered, including establishing pressure reduction targets prior to and during the in-ditch work

Develop a buffing protocol for repairing cracks but also for verifying the defect dimensions and characteristics

Determination of Next Assessment Interval

Review growth mechanisms and justify a potential growth rate

Outline and perform a fatigue crack growth rate analysis

Consider interactive growth mechanisms

Condition Monitoring

Identify activities to monitor between integrity assessments that could result in an increased growth rate or threat susceptibility level

Ascertain if the probability of continued growth of known or potentially existing cracks has changed between integrity assessments

Additional Preventive Measures

Identify and implement additional activities that can be put in place to prevent the formation or growth of existing threat

Document and Store Program Activities

Document and incorporate management program into O&M procedures

Organize data, analysis and results in a database accessible by responsible personnel

Evaluate Program Effectiveness

Evaluate program for its effectiveness of tasks description and completion dates, execution of responsible personnel and support by organization

Identify areas of continuous improvements with respect to stated goals

Demonstrate continuous process improvement

Cracks Commonly Found in Pipelines

Environmentally Assisted

Stress corrosion cracking, hydrogen induced cracking, sulfide stress cracking, and corrosion fatigue cracking

Manufacturing Related

Long seam weld lack of fusion, cold weld, hook crack-like, selective seam corrosion, surface breaking laminations, and girth weld cracks

Mechanically Driven

Cracks in dents and fatigue cracks